A cable connection system for ship shore power supply and use method thereof

Abstract

The present invention discloses a cable connection system for ship shore power supply and a method of using the same, which belongs to the field of shore power supply. The system uses a chassis vehicle to drive an upper cable winch close to the ship so that the upper cable winch can move in the port, thereby adjusting the distance between the upper cable winch and the ship, and transporting the vehicle-ship cable to the ship through the upper cable winch, so as to realize the transportation of the cable between the shore power box and the ship. The cable connection system for ship shore power supply of the present invention has a simple overall structure and is easy to operate. It can accurately realize the rapid connection of the cable between the shore power box and the ship, and during the power supply process, the tension size and the number of unwinding turns of the vehicle-ship cable are detected in real time, and the vehicle-ship cable is adjusted and controlled according to the detection results, thereby ensuring the stability and safety of the upper cable winch during the winding / unwinding process, ensuring the normal progress of the cable transportation process, and having good practical value and application prospects.

Description

Technical Field

[0001] The present invention belongs to the field of shore power supply, and in particular relates to a cable connection system for ship shore power supply and a use method thereof. Background Art

[0002] With the rapid development of the shipping industry, in order to reduce fuel consumption and the air pollution caused and implement a green and low-carbon development strategy, shore power supply systems have been built at many docks and ports to supply electricity to docked ships.

[0003] The supply of shore power effectively solves the pollution problem and is more economical and environmentally friendly. However, the supply of shore power requires the power provided by the shore power box to be transmitted to the ship through cables. Due to the high height of the ship, the shore power cable is heavy, especially for ships with high power requirements. There are 12 shore power cables, which poses great difficulties for efficient shore power supply. Therefore, how to effectively improve the connection efficiency of the cable between the shore power box and the ship is a key issue in the supply of ship shore power.

[0004] In the prior art, when supplying power to ships, some people manually pull the cable off the ship and then connect it to the shore power box at the port to achieve the connection between the shore power box and the ship. However, this method is not only time-consuming and labor-intensive, but also inefficient. Some people set up multiple cable stations on the dock to connect the shore power box and the ship through the cable station. Although it can improve the cable connection efficiency to a certain extent compared with the manual pulling method, due to the fixed setting of the cable station, the berthing position of the ship is required to be high. Therefore, the method of directly connecting the cable station to the shore power box has certain limitations and cannot meet the use requirements of fast cable connection. In addition, there is also a method of using a mobile cable conveying device to convey the cable. Although it can be more convenient to connect the shore power box and the cable compared with the above two methods, the tension of the cable cannot be monitored and adjusted accordingly during the charging process, which easily causes the cable to be over-pulled during the power supply process, resulting in the loosening of the connection between the cable and the port shore power box or the ship shore power box, thereby affecting the normal power supply operation of the cable. Therefore, no matter which of the above methods is used, in actual use, it cannot meet the needs of efficient and safe power supply for ships when they are docked. Summary of the invention

[0005] In view of one or more of the above defects or improvement requirements of the prior art, the present invention provides a cable connection system for ship shore power supply and a method of using the same, which can realize the rapid connection of the cable between the ship and the shore power box, effectively improving the connection efficiency between the two. At the same time, during the transmission process, the cable tension, the remaining number of turns and the torque of the reel rotation can be detected in real time, thereby ensuring the safety and stability of the cable transmission process.

[0006] To solve the above problems, according to one aspect of the present invention, a cable connection system for shore power supply of a ship is provided, which is used for conveying cables between a shore power box and a ship, and comprises a chassis vehicle and a cable winch for upper installation arranged on the chassis vehicle;

[0007] The upper cable winch includes a vehicle-vessel cable drum assembly and a cable lifting mechanism connected to the vehicle-vessel cable drum assembly; the vehicle-vessel cable drum assembly is arranged on the chassis vehicle, used for winding / unwinding the vehicle-vessel cable, and transported to the ship through the cable lifting mechanism; and

[0008] A tension control component is provided in the cable lifting mechanism corresponding to the vehicle-ship cable, which is used to detect the cable tension of the vehicle-ship cable during transportation, and to adjust the unwinding rate of the vehicle-ship cable drum assembly according to the detection result;

[0009] At the same time, a shore vehicle cable reel assembly is also provided on the chassis vehicle for winding up the shore vehicle cable; one end of the shore vehicle cable is connected to the port shore power box, and the other end is connected to the vehicle-ship cable and wound on the shore vehicle cable reel assembly, and then the shore vehicle cable is unwound by rotating the shore vehicle cable reel assembly.

[0010] As a further improvement of the present invention, the vehicle-ship cable reel assembly includes two lateral support plates and a reel arranged between the two lateral support plates; the vehicle-ship cable is wound on the reel, and a driving mechanism is arranged corresponding to the reel, so that the reel can realize the winding / unwinding operation of the vehicle-ship cable under the drive of the driving mechanism.

[0011] As a further improvement of the present invention, the driving mechanism is a variable frequency motor, which is connected to the reel through a reducer; and

[0012] A rotary encoder is also provided corresponding to the variable frequency motor, which is electrically connected to the driving mechanism and is used to detect the number of revolutions of the reel.

[0013] As a further improvement of the present invention, the cable lifting mechanism comprises a telescopic arm, a luffing mechanism and an electric traction mechanism;

[0014] One end of the telescopic arm is connected to the electric traction mechanism, and the other end thereof is rotatably connected to the vehicle-ship cable drum assembly, and a variable amplitude mechanism is arranged between the vehicle-ship cable drum assembly and the telescopic arm; one end of the vehicle-ship cable extends out from the vehicle-ship cable drum assembly and extends and limits into the electric traction mechanism, so that the electric traction mechanism can lower the vehicle-ship cable to the ship during the telescopic and / or pitching movement of the telescopic arm.

[0015] As a further improvement of the present invention, the electric traction mechanism includes a bracket and a plurality of groups of cable conveyors arranged on the bracket;

[0016] The cable lifting mechanism also includes a plurality of towing cable mechanisms arranged on the telescopic arm, one end of the cable passes through at least one of the towing cable mechanisms and matches at least one cable conveyor with its end, so that the vehicle-ship cable can be actively pulled under the drive of the at least one cable conveyor.

[0017] As a further improvement of the present invention, the vehicle-vessel cable drum assembly is connected to the chassis via a slewing platform assembly, and the slewing platform assembly enables the upper mounted cable winch to rotate horizontally relative to the chassis vehicle.

[0018] As a further improvement of the present invention, the chassis vehicle comprises a translation bottom plate and a walking mechanism arranged under the translation bottom plate; and

[0019] A storage battery is arranged on the translation base plate corresponding to the walking mechanism, for supplying power to the walking mechanism.

[0020] As a further improvement of the present invention, at least one pair of hydraulic feet is provided on opposite sides of the bottom plate;

[0021] The hydraulic legs can be extended and retracted in a vertical direction to lift the chassis vehicle.

[0022] To solve the above problem, according to another aspect of the present invention, a method for using a cable connection system for ship shore power supply is provided, comprising the following steps:

[0023] S1: Connect the shore vehicle cable on the shore vehicle cable drum assembly to the port shore power box, and after the connection, control the chassis vehicle to move towards the ship; at the same time, the shore vehicle cable drum assembly continues to unwind;

[0024] S2: After the cable connection system moves to the side of the ship, the cable connection system is fixed and limited;

[0025] S3: Control the vehicle-ship cable drum assembly to unwind the cable, and use the cable lifting mechanism to lift the vehicle-ship cable to the deck of the ship;

[0026] S4: Connect one end of the vehicle-ship cable to the ship shore power box, and connect the other end of the vehicle-ship cable to the shore-to-vehicle cable, so as to realize power transmission between the port shore power box and the ship shore power box;

[0027] S5: After the ship is charged, disconnect the connection between the vehicle-ship cable and the ship shore power box, the port shore power box and the shore-to-vehicle cable, and the shore-to-vehicle cable and the vehicle-ship cable in turn, and control the shore-to-vehicle cable drum assembly and the vehicle-ship cable drum assembly to reel the shore-to-vehicle cable and the vehicle-to-ship cable respectively.

[0028] As a further improvement of the present invention, in the process of conveying the vehicle-vessel cable in step S3, the tension control component can control the tension of the vehicle-vessel cable, and the control process includes the following steps:

[0029] S301: Real-time detection of the tension of the vehicle-vessel cable by means of a tension control component provided in the electric traction mechanism;

[0030] S302: When the tension of the vehicle-vessel cable is too large or too small, the tension control component sends a feedback signal to the electrical control box;

[0031] S303: The electrical control box adjusts the rotation speed of the driving mechanism according to the feedback signal, thereby adjusting the tension of the vehicle-vessel cable.

[0032] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0033] In general, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:

[0034] (1) The cable connection system for ship shore power supply of the present invention is connected to the port shore power box and the ship shore power box respectively through the shore-to-vehicle cable drum assembly and the vehicle-to-ship cable drum assembly, thereby dividing the cable connection operation between the port shore power box and the ship into two independent cable connection operation processes, simplifying the cable connection process, thereby improving the cable connection efficiency. The vehicle-to-ship cable on the vehicle-to-ship cable drum assembly is transported toward the ship by means of a cable lifting mechanism, thereby realizing the rapid connection of the vehicle-to-ship cable between the ship and the shore power box. At the same time, the tension of the vehicle-to-ship cable during the transmission process is detected in real time by means of a tension control component disposed in the electric traction mechanism, and the rotation rate of the vehicle-to-ship cable drum assembly is adjusted accordingly according to the detection result, thereby preventing the vehicle-to-ship cable from breaking due to excessive tension, thereby ensuring the normal winding / unwinding operation of the vehicle-to-ship cable drum assembly.

[0035] (2) The cable connection system for shore power supply of ships of the present invention optimizes the type of driving mechanism, the style of the reel, the transmission method and the location of various sensors in the vehicle-ship cable reel assembly, so that the torque of the reel rotation can be continuously adjusted when the vehicle-ship cable reel assembly is performing the winding / unwinding operation, thereby ensuring that the vehicle-ship cable can be stably lifted. At the same time, through the optimally arranged rotary encoder, the rotary encoder can monitor the number of turns of the vehicle-ship cable on the reel in real time, preventing the length of the vehicle-ship cable from being too long, thereby ensuring the safety of the vehicle-ship cable reel assembly during the unwinding process.

[0036] (3) The cable connection system for ship shore power supply of the present invention is provided with a chassis vehicle at the bottom of the upper cable winch, so that the upper cable winch can be moved under the drive of the chassis vehicle, and then the distance between the upper cable winch and the ship is adjusted, thereby improving the maneuverability of the upper cable winch. The hydraulic support legs preferably provided on the side of the chassis vehicle and the characteristics of the hydraulic support legs being able to be retracted vertically are used to lift the chassis vehicle and the upper cable winch as a whole, thereby preventing the upper cable winch from slipping during operation, thereby ensuring the stability and safety of the upper cable winch during operation. In addition, through the optimal design of the battery capacity in the flatbed vehicle, the battery can meet the basic power demand of each device in the upper cable winch under extreme conditions, and the design of the size of the upper cable winch and the chassis vehicle and the selection of the installation position ensure that the cable connection system can work normally even when the port is affected by wind.

[0037] (5) The cable connection system for ship shore power supply of the present invention has a simple overall structure and is easy to operate. It can accurately realize the rapid connection of the cable between the shore power box and the ship. During the power supply process, the tension and the number of unwinding turns of the vehicle-ship cable are detected in real time, and the vehicle-ship cable is adjusted and controlled according to the detection results, thereby ensuring the stability and safety of the upper cable winch during the winding / unwinding process and ensuring the normal progress of the cable transportation process. It has good practical value and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic diagram of the overall front view structure of the cable connection system in an embodiment of the present invention;

[0039] Figure 2 is an axle-measurement diagram of a chassis in a cable connection system in an embodiment of the present invention;

[0040] Figure 3 is an axonometric view of a top-mounted cable winch in a cable connection system in an embodiment of the present invention;

[0041] Figure 4is an axonometric diagram of a rotary platform in a cable connection system according to an embodiment of the present invention;

[0042] Figure 5 is an axonometric view of a reel in a cable connection system according to an embodiment of the present invention;

[0043] Figure 6 is an axonometric view of a lateral support plate in a cable connection system according to an embodiment of the present invention;

[0044] Figure 7 2 is a front view structural diagram of an upper mounted cable winch in a cable connection system in an embodiment of the present invention;

[0045] Figure 8 is a block diagram of a cable connection system according to an embodiment of the present invention;

[0046] Fig. 9 is a schematic diagram of cables being connected in a cable connection system according to an embodiment of the present invention;

[0047] Fig.10 is a schematic diagram of a cable connection system in an embodiment of the present invention when supplying power to a ship;

[0048] Fig.11 is a force analysis diagram of the lateral stability of the cable connection system in an embodiment of the present invention;

[0049] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0050] 1. Cable winch for upper installation;

[0051] 101, slewing platform assembly; 1011, slewing platform upper connecting piece; 1012, slewing driving piece; 1013, slewing platform lower connecting piece;

[0052] 102. Cable drum assembly for vehicles and ships; 1021. Lateral support plate; 1022. Reel; 1023. Rotary encoder; 1024. Slip ring assembly; 1025. Slip ring distribution box; 1026. Speed ​​reducer; 1027. Frequency conversion motor;

[0053] 103. Cable lifting mechanism; 1031. Telescopic arm; 1032. Boom changing mechanism; 1033. Towing cable mechanism;

[0054] 104. Electric traction mechanism; 1041. Bracket; 1042. Cable conveyor; 1043. Tension control assembly;

[0055] 105. Shore vehicle cable drum assembly;

[0056] 106. Power source;

[0057] 2. Chassis vehicle; 201. Sliding base plate; 202. Traveling mechanism; 203. Hydraulic outriggers. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0063] Example:

[0064] See also Figure 1 to Figure 6 The cable connection system in the preferred embodiment of the present invention is mainly used for the transmission of cables between the port shore power box and the ship shore power box before the ship performs power supply operation after docking.

[0065] Specifically, the cable connection system includes a chassis vehicle 2 and a top-mounted cable winch 1 arranged on the chassis vehicle 2. The chassis vehicle 2 is used to drive the top-mounted cable winch 1 to move in the port, thereby adjusting the distance between the top-mounted cable winch 1 and the ship, and the vehicle-ship cable is quickly and stably transmitted to the ship through the top-mounted cable winch 1, thereby realizing the rapid connection operation of the vehicle-ship cable between the shore power box and the ship.

[0066] Furthermore, the upper cable winch 1 includes a vehicle-ship cable drum assembly 102 and a cable lifting mechanism 103 connected to the vehicle-ship cable drum assembly 102, on which a vehicle-ship cable is wound, and one end of the vehicle-ship cable is extended and limited within the cable lifting mechanism 103, and then the cable is transported to the ship through the telescopic / amplitude-changing operation of the cable lifting mechanism 103 in coordination with the vehicle-ship cable assembly to unwind the vehicle-ship cable.

[0067] Furthermore, in order to facilitate the connection between the cable connection system and the port shore power box, a shore vehicle cable reel assembly 105 is also provided on the chassis vehicle 2, on which a shore vehicle cable is wound. One end of the shore vehicle cable is connected to the port shore power box, and the other end is connected to the vehicle-ship cable reel assembly 102 after the cable connection system moves to the side of the ship, thereby realizing the connection between the port shore power box and the ship shore power box.

[0068] It can be understood that after the shore vehicle cable drum assembly 105 is connected to the port shore power box and moves toward the ship, the shore vehicle cable drum assembly 105 continues to unwind, thereby adapting to the increasing distance between the chassis vehicle 2 and the port shore power box, thereby replacing the traditional method of manually pulling the cable to connect the port shore power box and the upper cable winch 1, which not only effectively saves manual labor, but also reduces the connection time between the port shore power box and the cable connection system, and improves the cable connection efficiency. In addition, during the unwinding of the shore vehicle cable drum assembly 105, the vehicle-ship cable drum assembly 102 will not unwind or rewind, thereby ensuring the orderly discharge of the vehicle-ship cable on the vehicle-ship cable drum assembly 102, so as to facilitate the subsequent transportation of the vehicle-ship cable.

[0069] Specifically, the shore vehicle cable drum assembly 105 includes a winding roller and a winding motor, which is connected to the winding roller by transmission, and the winding roller is driven to rotate by the rotation of the winding motor to realize the winding and unwinding operation of the shore vehicle cable on the winding roller.

[0070] In more detail, the vehicle-vessel cable drum assembly 102 includes two lateral support plates 1021 and a reel 1022 disposed between the two lateral support plates 1021; corresponding to the reel 1022, a driving mechanism is disposed on the lateral support plates 1021, the driving mechanism is connected to the reel 1022 in a transmission manner, and drives the reel 1022 to rotate, thereby realizing the reeling / unreeling operation of the vehicle-vessel cable on the reel 1022. At the same time, the two lateral support plates 1021 are installed on the rotary platform assembly 101, one end of the cable lifting mechanism 103 is rotatably connected between the two lateral support plates 1021, and the other end of the electric traction mechanism 104 is a telescopic end, and is connected to the electric traction mechanism 104, thereby utilizing the telescopic and variable amplitude of the cable lifting mechanism 103 to adjust the cable lifting height and the horizontal distance between the cable and the vessel, and utilizing the rotation of the rotary platform assembly 101 to realize the rapid alignment between the upper cable winch 1 and the ship shore power box, so as to facilitate the subsequent vehicle-vessel cable connection operation.

[0071] In the above preferred embodiment, the preferred driving mechanism is a variable frequency motor 1027, and the variable frequency motor 1027 drives the reel 1022 to rotate through the reducer 1026, so that the torque generated by the reel 1022 can be continuously adjustable, thereby ensuring the normal winding / unwinding operation of the vehicle and ship cable. At the same time, a rotary encoder 1023 is provided corresponding to the variable frequency motor 1027 to detect the number of unwinding turns of the reel 1022, thereby ensuring the stable transmission operation of the vehicle and ship cable. Further preferably, a low-voltage slip ring group 1024 is provided in the reel 1022, and a slip ring distribution box 1025 matching the low-voltage slip ring group 1024 is provided on one of the lateral support plates 1021, and then through the low-voltage slip ring group 1024 and the slip ring distribution box 1025, the dynamic power transmission of the vehicle and ship cable reel assembly 102 is realized.

[0072] In a specific application scenario, when the rotary encoder 1023 detects that the number of remaining vehicle-ship cable turns on the vehicle-ship cable reel assembly 102 reaches the alarm value, it can send out a switching signal and issue an audible and visual alarm signal; and when the number of cable turns on the vehicle-ship cable reel assembly 102 reaches the tripping protection value, the safety circuit is cut off while issuing an audible and visual alarm signal, thereby ensuring the safety of the vehicle-ship cable reel assembly 102 during the winding / unwinding operation.

[0073] In more detail, in order to ensure the constant tension control of the vehicle and ship cable drum assembly 102 when it is in working state, the longer the vehicle and ship cable released by the drum 1022 is, the greater its reeling force is, and vice versa; and in order to achieve the above purpose, it can be achieved by detecting the rotation torque of the reducer 1026, and then converting the detected torque into a tension value and feeding it back to the electrical control box. At the same time, the detected tension value can also facilitate the operator to grasp the tension of the vehicle and ship cable in real time, and when the tension value exceeds the predetermined value, it can automatically stop the reeling / unreeling operation and remind the operator by means of an alarm, so as to further ensure the stability and safety of the reeling / unreeling operation.

[0074] In such Figure 3 and Figure 5 As shown, the inner cylinder of the reel 1022 is preferably spirally wound, and its outer side is welded to the outer side of the inner cylinder through a rectangular steel structure to form four cable troughs for storing vehicle and ship cables. It is further preferred that the number of cable troughs is six, so as to be suitable for vehicle and ship cables of different specifications and different quantities.

[0075] Furthermore, in Figure 2In the preferred embodiment shown, the cable lifting mechanism 103 includes a telescopic arm 1031 and a luffing mechanism 1032. The telescopic arm 1031 is rotatably connected to the vehicle-vessel cable drum assembly 102. The telescopic end of the luffing mechanism 1032 is connected to the telescopic arm 1031, and its tail end is installed on the lateral support plate 1021, so that the height and horizontal distance of the vehicle-vessel cable transmission are adjusted by the length change of the luffing mechanism 1032 and the telescopic arm 1031. At the same time, a plurality of towing cable mechanisms 1033 are arranged at intervals on the bottom of the telescopic arm 1031, and the vehicle-vessel cable passes through the plurality of towing cable mechanisms 1033 in sequence.

[0076] In the actual setting process, in order to ensure the stable operation of the telescopic arm 1031 and the amplitude-changing mechanism 1032, both are driven by hydraulic control, and they form a linkage control with the vehicle-ship cable drum assembly 102, so that according to the power distribution position required by the ship, through the extension and extension and amplitude-changing of the cable lifting mechanism 103, and the winding / unwinding of the vehicle-ship cable drum assembly 102, the rapid transportation operation of the vehicle-ship cable is realized, thereby effectively improving the efficiency and convenience of the vehicle-ship cable when connecting.

[0077] In addition, a limit sensor is also provided on the telescopic arm 1031 , and the limit sensor can detect the telescopic length of the telescopic arm 1031 in real time.

[0078] Furthermore, in order to ensure the normal transportation of the vehicle-ship cable during the winding / unwinding operation and meet the power supply requirements of different power receiving positions on the ship, an electric traction mechanism 104 is provided at the telescopic end of the telescopic arm 1031. The connector end of the vehicle-ship cable passes through the electric traction mechanism 104 and can be actively transported to the ship's side under the drive of the mechanism.

[0079] Specifically, in Figure 2 and Figure 7 In the preferred embodiment shown, the electric traction mechanism 104 includes a bracket 1041 and at least one set of cable conveyors 1042 arranged on the bracket 1041. One end of the vehicle-vessel cable passes through the cable conveyor 1042, and then the vehicle-vessel cable is actively dragged by the rotation of the three sets of cable conveyors 1042, so as to transport the vehicle-vessel cable. Preferably, there are three sets of cable conveyors 1042, and they are arranged on the bracket 1041 at intervals.

[0080] At the same time, in order to prevent the vehicle-ship cable from being damaged due to excessive tension, a tension control component 1043 is provided on the electric traction mechanism 104 to detect the tension of the vehicle-ship cable and ensure that the tension of the vehicle-ship cable is controlled within a certain reasonable value when the vehicle-ship cable drum assembly 102 is reeling / unreeling.

[0081] Specifically, the tension control component 1043 includes a rotating shaft and a proximity switch. The rotating shaft is used to sense the tension of the vehicle-ship cable and transmit the signal to the electrical control box through the proximity switch, thereby realizing real-time detection of the tension of the vehicle-ship cable.

[0082] In a specific application scenario, after the vehicle-ship cable is connected to the ship through the device, because the ship is in the water, the fluctuation of the sea water, the rising tide and the falling tide will cause the change of the tension of the vehicle-ship cable. Specifically: at low tide, the vehicle-ship cable at the ship end pulls the electric traction mechanism 104 downward, and drives the side rotating shaft to rotate at a small angle, indirectly contacting the proximity switch to close, thereby feeding back the signal to the controller, thereby determining that the torque of the electric traction mechanism 104 is greater than the set torque of the vehicle-ship cable drum assembly 102. At this time, the vehicle-ship cable drum assembly 102 will automatically release the cable until the contact is released, thereby maintaining the vehicle-ship cable tension value within a reasonable value.

[0083] In addition, a hook is provided at the bottom end of the electric traction mechanism 104, so that the electric traction mechanism 104 can lift cargo onto the ship while conveying the vehicle-ship cable, thereby making the electric traction mechanism 104 more versatile.

[0084] More specifically, the slewing platform assembly 101 includes a slewing platform upper connector 1011, a slewing driving member 1012, and a slewing platform lower connector 1013, and the slewing platform upper connector 1011 and the slewing platform lower connector 1013 are respectively arranged at the upper and lower ends of the slewing driving member 1012. Preferably, the slewing platform lower connector 1013 and the chassis 2 are connected by bolts, and the slewing platform upper connector 1011 is also connected to the lateral support plate 1021 by bolt connection. At the same time, in order to ensure the normal operation of the slewing platform assembly 101 and the stability of the upper cable winch 1 when rotating on the slewing platform assembly 101, the maximum rotation range of the slewing platform assembly 101 is preferably ±120°.

[0085] Furthermore, a power source 106 is provided on the chassis 2, which includes a hydraulic pump station, an electrical control box, and a battery located inside the chassis 2. The hydraulic pump station is connected to the telescopic arm 1031 and the luffing mechanism 1032 through two separate hydraulic circuits, thereby controlling the telescopic movement of the telescopic arm 1031 and the luffing mechanism 1032; the battery is used to supply power to the vehicle-vessel cable drum assembly 102, the rotary platform assembly 101, the electric traction mechanism 104, and the chassis 2, and the above-mentioned equipment is electrically connected to the electrical control box, and the start and stop control of the above-mentioned equipment is realized through the electrical control box.

[0086] Specifically, in Figure 8In the preferred embodiment shown, on the basis that the electrical control box can perform simple start and stop control on the above-mentioned equipment, the sensors provided corresponding to each equipment can realize automatic control of the electrical equipment through the electrical control box, and then perform various monitoring on the transportation of vehicle and ship cables, and adjust the unwinding operation of the vehicle and ship cables accordingly according to the monitoring results. Specifically, the rotary encoder 1023 can detect the number of rotations of the reel 1022 in real time, so as to judge the remaining amount of the vehicle-ship cable on the reel 1022. When the rotary encoder 1023 detects that the remaining amount of the vehicle-ship cable on the reel 1022 is too little, it can transmit the detection signal to the electrical control box, and the electrical control box can control the variable frequency motor 1027 to stop rotating; the tension control component 1043 can detect the tension of the vehicle-ship cable passing through the electric traction mechanism 104, and can feed back the signal to the electrical control box when the tension of the vehicle-ship cable is too large or too small, and then adjust the speed of the variable frequency motor 1027 through the electrical control box, so as to achieve the effect of adjusting the tension of the vehicle-ship cable, thereby realizing the real-time detection of the tension of the vehicle-ship cable by the device through the linkage of the tension control component 1043, the electric traction mechanism 104 and the variable frequency motor 1027, thereby ensuring that the tension of the vehicle-ship cable is continuously controllable.

[0087] In addition, an alarm light is also provided on the electrical control box, which is electrically connected to the electrical control box. When the tension of the vehicle or ship cable exceeds a preset value, an audible and visual alarm signal is generated, and the operator is promptly reminded to perform reeling / unreeling operations, thereby ensuring the safety of the operation process.

[0088] Furthermore, the chassis 2 includes a translation base plate 201 and a traveling mechanism 202 disposed below the translation base plate 201. The traveling mechanism 202 can drive the translation base plate 201 to move and turn. A battery electrically connected to the traveling mechanism 202 is also disposed in the translation base plate 201 to drive the traveling mechanism 202 to move, thereby adjusting the distance and orientation angle between the upper cable winch 1 and the ship. At the same time, a hydraulic pump station base and an electrical control box base are disposed on the translation base plate 201 corresponding to the liquid pump station and the electrical control box, so as to provide a location for the hydraulic station and the electrical control box to be installed.

[0089] In the actual setting process, in order to ensure the stability of the upper cable winch 1 when transporting the vehicle and ship cables, a number of hydraulic legs 203 are arranged on the periphery of the chassis 2. Preferably, there are four hydraulic legs 203 and they are arranged on opposite sides of the chassis 2, so that the chassis 2 is prevented from slipping during the transportation of the vehicle and ship cables through the support of the hydraulic legs 203, thereby ensuring the safety of the transportation and connection of the vehicle and ship cables. At the same time, in order to facilitate the storage of the hydraulic legs 203 when not in use and reduce the width of the chassis 2 when walking, it is preferred that the hydraulic legs 203 are connected to the chassis 2 by hydraulic telescopic means, so that the hydraulic legs 203 can be retracted when not in use, and when in use, the hydraulic legs 203 can be extended horizontally to provide stable support for the chassis 2.

[0090] Furthermore, since the cable connection system usually needs to work on the dock, in the actual working process, the cable connection system is usually affected by the force of the sea breeze, which has a great impact on the stability of the cable connection system. Fig.11 In the preferred embodiment shown, it is necessary to design the parameters between the various components in combination with the stability of the cable connection system under the action of coastal wind, that is, to perform a wind stability design.

[0091] When designing the stability under wind force, it is first necessary to determine the direction of wind force acting on the cable connection system and the actual wind force magnitude. Preferably, when other conditions are the same, when the wind direction is perpendicular to the front and side of the cable connection system, the area of ​​wind force acting on the cable connection system is the largest, and the wind force acting on the cable connection system is also at its maximum value. Therefore, the stability design under wind force includes the longitudinal wind stability design of the cable connection system under longitudinal wind and the transverse wind stability design of the cable connection system under transverse wind.

[0092] Among them, the steps of designing the lateral wind stability of the cable are as follows: determine the wind force level to which the cable connection system is subjected, the slope of the working slope of the cable connection system, and determine the safety factor of the cable connection system when subjected to longitudinal wind. Preferably, the safety factor of the cable connection system when subjected to longitudinal wind is not less than 1; determine the working state of the cable connection system; that is, determine whether the system is in a lifting state, and the specific degree of lifting; select a tire with a lower vertical position as a reference, and use the position of its corresponding tire contacting the ground as the analysis reference point; the torque analysis of each component includes the torque generated by its own weight and the torque generated by the influence of wind; construct the wind force relationship according to the stabilizing torque, longitudinal wind tipping torque and safety factor as follows:

[0093] Safety factor:

[0094] in:

[0095]

[0096] And: T i =F i ·L i or T j =F j ·L j

[0097] At the same time: F 风 =P 风 ·S or F = mg

[0098] In the above formula, K 纵 T is the safety factor of the cable connection system when subjected to longitudinal wind; 稳 T is the sum of the torques that can keep the cable connection system stable according to the direction of the torque; 稳 T is the sum of the moments that can cause the cable connection system to flip, determined by the direction of the moment; i The torque to keep the system stable; T j is the moment that causes the system to flip; F is the force on each component of the system; L is the distance between each component of the system and the reference; F 风 P is the wind load generated by wind-blown components; 风 is the wind pressure; S is the effective area of ​​the wind acting on the component.

[0099] Finally, the design parameters of the cable connection system components that meet the above formula are selected, and the cable connection system is constructed according to the design parameters.

[0100] In addition, in another preferred embodiment of the present application, in order to ensure that the cable connection system can complete the cable traction connection work without an external power supply, it is necessary to separately design the system battery capacity when performing the comprehensive design of the cable connection system, and it is also necessary to determine the working time of the system battery capacity to ensure that the battery capacity of the system can meet the emergency work requirements when there is no external power supply.

[0101] Specifically, in a preferred embodiment, when calculating the system battery capacity, it is necessary to comprehensively consider factors such as the minimum battery power after battery discharge, the power of each system mechanism, the working efficiency of each mechanism, and the required working time, so that the system battery after calculating the system power capacity can meet the normal working requirements of the cable connection system.

[0102] Among them, the system battery capacity is calculated by the following formula:

[0103]

[0104] Where Q1 is the battery capacity required by the system; P1…P n is the power of each component from the 1st to the nth component; t1…t x The time required for each of the first to nth components to complete their work; η1…η n is the working efficiency of each component from the 1st to the nth component; n is the total number of components; ω1 is the maximum discharge capacity of the system battery.

[0105] Furthermore, in a preferred embodiment of the present application, the battery capacity will decay due to the increase in service life, overcharge and discharge, low temperature working environment, electrode or electrolyte decomposition and other issues. Therefore, when actually designing the system battery capacity, it is necessary to consider the battery capacity decay caused by the above reasons and perform the battery capacity decay calculation. The calculation formula is as follows:

[0106]

[0107] In the above formula, Q2 is the battery capacity after considering battery attenuation; ω2 is the battery capacity attenuation caused by years of use; ω3 is the battery capacity attenuation caused by low temperature working environment.

[0108] On this basis, the method of using the cable connection system in the preferred embodiment is as follows:

[0109] S1: Connect the shore vehicle cable on the shore vehicle cable drum assembly 105 to the port shore power box; after the connection, control the chassis vehicle 2 to move toward the ship; at the same time, the shore vehicle cable drum assembly 105 continues to unwind.

[0110] Specifically, the cable connection system is driven out of the warehouse and moved to the vicinity of the port shore power box, so that the shore vehicle cable reel assembly 105 can be unwound, and the shore vehicle cable on the shore vehicle cable reel assembly 105 is connected to the port shore power box, so as to realize the power transmission operation between the system and the shore power box; after the connection is completed, the operator can control the cable connection system to move toward the ship. During this process, the shore vehicle cable reel assembly 105 continues to unwind, while the vehicle-ship cable reel assembly 102 does not operate.

[0111] S2: After the cable connection system moves to the side of the ship, the cable connection system is fixed and limited.

[0112] Furthermore, in step S2, after the cable connection system moves to the side of the ship, the hydraulic legs 203 are controlled to fix and limit the cable connection system. Specifically, the hydraulic legs 203 are first extended horizontally and then extended vertically, and then the entire cable connection system is lifted up by the hydraulic legs 203, and the guide wheels at the bottom of the chassis 2 are separated from the ground, thereby ensuring stability during the subsequent cable transportation process.

[0113] S3: Control the vehicle-ship cable drum assembly 102 to perform unwinding operation, and use the cable lifting mechanism 103 to lift the vehicle-ship cable to the deck of the ship.

[0114] Specifically, the operator controls the rotation of the slewing platform assembly 101 so that the upper cable winch 1 can face the direction of the ship's power receiving port or the ship's shore power box, and then controls the extension of the telescopic arm 1031. At the same time, the amplitude-changing mechanism 1032 lifts the telescopic arm 1031 to a certain height to adjust the vertical and horizontal distances between the vehicle-ship cable and the ship's shore power box until the connector at the end of the vehicle-ship cable is located on the deck of the ship. At the same time, during the movement of the telescopic arm 1031 and the amplitude-changing mechanism 1032, the electric traction mechanism 104 maintains the clamping state of the vehicle-ship cable, and does not transport the vehicle-ship cable, while the vehicle-ship cable drum assembly 102 continues to unwind, thereby ensuring that when the telescopic arm 1031 is extended, the length of the vehicle-ship cable can be synchronized with the telescopic length of the telescopic arm 1031.

[0115] Furthermore, during the power supply of the vehicle-vessel cable, in order to keep the vehicle-vessel cable in a moderate tension state at all times, the tension control component 1043 provided in the electric traction mechanism 104 can monitor the tension of the vehicle-vessel cable in real time, and the control process of the tension of the vehicle-vessel cable is specifically as follows:

[0116] S301: Real-time detection of the tension of the vehicle-vessel cable is performed through the tension control component 1043 provided in the electric traction mechanism 104.

[0117] S302: When the tension on the vehicle-vessel cable is too large or too small, the tension control component 1043 sends a feedback signal to the electrical control box.

[0118] S303: The electrical control box adjusts the rotation speed of the driving mechanism according to the feedback signal, thereby adjusting the tension of the vehicle-vessel cable.

[0119] In a specific application scenario, when the tide is high, due to the increase in the overall height of the ship, the vehicle-ship cable will be in an over-tensioned state, and the tensioning control component 1043 located in the electric traction mechanism 104 will transmit a signal that the vehicle-ship cable tension is too large to the electrical control box, and then control the vehicle-ship cable reel assembly 102 to properly unwind, thereby preventing the vehicle-ship cable from being damaged due to excessive tension; when the tide is low, the overall height of the ship decreases, and the vehicle-ship cable is in a relaxed state. The tensioning control component 1043 will control the transmission of a signal that the vehicle-ship cable tension is too small to the electrical control box, and then control the vehicle-ship cable reel assembly 102 to automatically retract the vehicle-ship cable, thereby preventing the vehicle-ship cable from falling between the dock and the ship's side, causing the vehicle-ship cable to be squeezed and damaged.

[0120] It can be understood that by means of the tensioning control component 1043 provided in the electric traction mechanism 104, the tension of the vehicle-ship cable can be kept constant during the charging process, thereby preventing the vehicle-ship cable from being damaged during the charging process, and can also effectively improve the stability of the vehicle-ship cable after connection, thereby ensuring the normal operation of the power supply operation.

[0121] In addition, a visual detection system is also provided on the chassis 2, which is used to detect the horizontal distance between the chassis 2 and the ship and the vertical distance between the chassis 2 and the ship deck, thereby facilitating the operator to position the chassis 2 and adjust the displacement distance of the variable amplitude mechanism 1032 and the telescopic arm 1031. This replaces the traditional positioning and control method through manual observation, and effectively improves the efficiency of the vehicle-ship cable lifting operation.

[0122] Specifically, the visual inspection system includes a first detection probe arranged on the outer peripheral surface of the chassis vehicle 2 and a second detection probe arranged on the electric traction mechanism 104. The first detection probe is used to detect the horizontal distance between the system and the ship, and the second detection probe is used to identify the position of the ship's shore power box, and then detect the vertical height of the vehicle-ship cable lifting and the horizontal distance between the vehicle-ship cable connector and the ship's shore power box.

[0123] S4: Connect one end of the vehicle-to-ship cable to the ship's shore power box, and connect the other end to the shore-to-vehicle cable to achieve power transmission between the port shore power box and the ship's shore power box.

[0124] Specifically, the electric traction mechanism 104 starts to work and guides the vehicle-ship cable at the end of the telescopic arm 1031 onto the ship deck. At the same time, the vehicle-ship cable drum assembly 102 continues to release the cable, and the operator on the ship needs to pull the vehicle-ship cable to the ship's shore power box and connect the connector at the end of the vehicle-ship cable to the ship's shore power box. After the connection is completed, the operator controls the telescopic arm 1031 to be fully retracted. During this period, the vehicle-ship cable drum assembly 102 and the electric traction mechanism 104 perform corresponding actions to keep the vehicle-ship cable in a moderately tensioned state, such as Fig.10 Status shown in .

[0125] Furthermore, a sheath steel cable ring is provided at the end of the vehicle-ship cable, and corresponding to the sheath steel cable ring, a connecting component matching it is provided next to the shore power box on the ship deck, and then through the connection between the sheath steel cable ring and the connecting component, the connected vehicle-ship cable is reinforced to prevent the connection between it and the ship's shore power box from loosening, so as to ensure the stability of the vehicle-ship cable during power transmission.

[0126] S5: After the ship is charged, disconnect the connection between the vehicle-ship cable and the ship shore power box, the port shore power box and the shore-to-vehicle cable, and the shore-to-vehicle cable and the vehicle-ship cable in turn, and control the shore-to-vehicle cable reel assembly 105 and the vehicle-ship cable reel assembly 102 to reel the shore-to-vehicle cable and the vehicle-to-ship cable respectively.

[0127] The cable connection system for ship shore power supply of the present invention has a simple overall structure and is easy to operate. It can accurately realize the rapid connection of the cable between the shore power box and the ship. During the power supply process, the tension and the number of unwinding turns of the vehicle-ship cable are detected in real time, and the vehicle-ship cable is adjusted and controlled according to the detection results, thereby ensuring the stability and safety of the upper cable winch during the winding / unwinding process, ensuring the normal progress of the cable transportation process, and having good practical value and application prospects.

[0128] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cable connection system for ship shore power supply, used for the transmission of cables between the shore power box and the ship, comprising a chassis and a cable winch mounted on the chassis, characterized in that: The upper cable winch includes a vehicle-vessel cable drum assembly and a cable lifting mechanism connected to the vehicle-vessel cable drum assembly; the vehicle-vessel cable drum assembly is arranged on the chassis vehicle, used for winding / unwinding the vehicle-vessel cable, and transported to the ship through the cable lifting mechanism; and A tension control component is provided in the cable lifting mechanism corresponding to the vehicle-ship cable, which is used to detect the cable tension of the vehicle-ship cable during transportation, and to adjust the unwinding rate of the vehicle-ship cable drum assembly according to the detection result; At the same time, a shore vehicle cable drum assembly is also provided on the chassis vehicle for winding up the shore vehicle cable; one end of the shore vehicle cable is connected to the port shore power box, and the other end is connected to the vehicle-ship cable and wound on the shore vehicle cable drum assembly, and then the shore vehicle cable is unwound by rotating the shore vehicle cable drum assembly; and When constructing the cable connection system, a lateral wind stability design of the cable connection system subjected to lateral wind is performed, and the steps of the design are as follows: Determine the wind force level and working slope of the cable connection system, and determine the safety factor of the cable connection system when subjected to longitudinal wind; determine the working state of the cable connection system; select the tire with a lower vertical position as the reference, and use the position where the corresponding tire contacts the ground as the analysis reference point; analyze the moment of each component, including the moment generated by its own weight and the moment generated by the wind; construct the wind force relationship based on the stabilizing moment, longitudinal wind tipping moment and safety factor as follows: Safety factor: in: and: or at the same time: or In the above formula, is the safety factor of the cable connection system when subjected to longitudinal wind; It is the sum of the moments that can keep the cable connection system stable, determined by the direction of the moment; is the sum of the moments that can cause the cable connection system to flip, determined based on the direction of the moment; The torque to keep the system stable; The torque to flip the system. is the force on each component of the system; is the distance of each component of the system relative to the reference; Wind loads generated by wind-blown components; is wind pressure; is the effective area of ​​the wind acting on the component; Finally, the design parameters of the cable connection system components that meet the above formula are selected, and the cable connection system is constructed according to the design parameters.

2. The cable connection system for ship shore power supply according to claim 1, characterized in that: The vehicle-ship cable drum assembly includes two side support plates and a reel arranged between the two side support plates; the vehicle-ship cable is wound on the reel, and a driving mechanism is arranged corresponding to the reel, so that the reel can realize the reeling / unreeling operation of the vehicle-ship cable under the drive of the driving mechanism.

3. The cable connection system for ship shore power supply according to claim 2, characterized in that: The driving mechanism is a variable frequency motor, which is connected to the reel via a reducer; and A rotary encoder is also provided corresponding to the variable frequency motor, which is electrically connected to the driving mechanism and is used to detect the number of revolutions of the reel.

4. The cable connection system for ship shore power supply according to any one of claims 1 to 3, characterized in that: The cable lifting mechanism includes a telescopic arm and an electric traction mechanism; One end of the telescopic arm is connected to the electric traction mechanism, and the other end thereof is rotatably connected to the vehicle-ship cable drum assembly, and a variable amplitude mechanism is arranged between the vehicle-ship cable drum assembly and the telescopic arm; one end of the vehicle-ship cable extends out from the vehicle-ship cable drum assembly and extends and limits into the electric traction mechanism, so that the electric traction mechanism can lower the vehicle-ship cable to the ship during the telescopic and / or pitching movement of the telescopic arm.

5. The cable connection system for ship shore power supply according to claim 4, characterized in that: The electric traction mechanism includes a bracket and a plurality of groups of cable conveyors arranged on the bracket; The cable lifting mechanism also includes a plurality of towing cable mechanisms arranged on the telescopic arm, one end of the cable passes through at least one of the towing cable mechanisms and matches at least one cable conveyor with its end, so that the vehicle-ship cable can be actively pulled under the drive of the at least one cable conveyor.

6. The cable connection system for ship shore power supply according to any one of claims 1 to 3 and 5, characterized in that: The vehicle-vessel cable drum assembly is connected to the chassis via a slewing platform assembly, and the slewing platform assembly enables the upper mounted cable winch to rotate horizontally relative to the chassis vehicle.

7. The cable connection system for ship shore power supply according to any one of claims 1 to 3 and 5, characterized in that: The chassis vehicle comprises a translation bottom plate and a running mechanism arranged under the translation bottom plate; and A storage battery is arranged on the translation base plate corresponding to the walking mechanism, for supplying power to the walking mechanism.

8. The cable connection system for ship shore power supply according to claim 7, characterized in that: At least one pair of hydraulic feet is provided on opposite sides of the base plate; The hydraulic support legs can be extended and retracted in a vertical direction to lift the chassis vehicle.

9. A method for using a cable connection system for ship shore power supply according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: Connect the shore vehicle cable on the shore vehicle cable drum assembly to the port shore power box, and after the connection, control the chassis vehicle to move towards the ship; at the same time, the shore vehicle cable drum assembly continues to unwind; S2: After the cable connection system moves to the side of the ship, the cable connection system is fixed and limited; S3: Control the vehicle-ship cable drum assembly to unwind the cable, and use the cable lifting mechanism to lift the vehicle-ship cable to the deck of the ship; S4: Connect one end of the vehicle-ship cable to the ship shore power box, and connect the other end of the vehicle-ship cable to the shore-to-vehicle cable, so as to realize power transmission between the port shore power box and the ship shore power box; S5: After the ship is charged, disconnect the connection between the vehicle-ship cable and the ship shore power box, the port shore power box and the shore-to-vehicle cable, and the shore-to-vehicle cable and the vehicle-ship cable in turn, and control the shore-to-vehicle cable drum assembly and the vehicle-ship cable drum assembly to reel the shore-to-vehicle cable and the vehicle-to-ship cable respectively.

10. The method for using the cable connection system for ship shore power supply according to claim 9, characterized in that: In the process of conveying the vehicle-vessel cable in step S3, the tension control component can control the tension of the vehicle-vessel cable, and the control process includes the following steps: S301: Real-time detection of the tension of the vehicle-vessel cable by means of a tension control component provided in the electric traction mechanism; S302: When the tension of the vehicle-vessel cable is too large or too small, the tension control component sends a feedback signal to the electrical control box; S303: The electrical control box adjusts the rotation speed of the driving mechanism according to the feedback signal, thereby adjusting the tension of the vehicle-vessel cable.

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